StumbleUpon Toolbar Updater Service is a software product for Windows developed by stumbleupon.com
It is reported that the following Windows processes are part of StumbleUpon Toolbar Updater Service:
If you want to remove StumbleUpon Toolbar Updater Service from your computer, just go to Start > Control Panel > Add/Remove programs and select StumbleUpon Toolbar Updater Service from the list of programs.